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Showing posts from March, 2019

Human Variation in High-Altitude

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H igh-altitude environments have adverse effects on humans and the way their bodies function normally. The change in the barometric pressure causes a decrease in the amount of oxygen and can lead to hypobaric hypoxia which is an imbalance of oxygen availability to the tissue and can cause severe psychological and physiological dysfunction  in humans. Sustained exposure to hypoxia can have very negative effects on body weight, muscle structure, exercise capacity, mental functioning, and sleep quality. Long exposure to high-altitude can lead to a decrease in muscle fiber density. It can also cause diaphragm and abdominal muscle contractile fatigue and can result in limitations in exercise high-altitude. High-altitude of over 3,000 m will produce physiological disorders and changes in moods as well as cognitive and motor performance. High-altitude can also affect anxiety and mental efficiency as well as short-term memory. Being at high-altitudes will reduce the amount of ox...

Spoken vs Body Language

Part One I am a very vocal person and I love talking, I am always finding my way into conversations. Not speaking at all was very difficult for me I felt frustrated because I wanted to be involved in the conversation. Just sitting there and not speaking felt like I was being useless and I felt like I was the brick wall. At first it wasn’t too hard because I asked my partner to tell me about something that happened to them recently so in a normal situation I would have probably just sat there and listened for the most part with little commentary. The part that got difficult was when my partner had finished their story and we still had time left in the fifteen minute conversation. At that point it became very awkward and it was hard for a new topic to be brought up. I had so many things going through my head that I felt would have been a good transition, but of course I couldn’t speak. At first there was no difference in the way my partner communicated with me but then he had to alte...

Piltdown Hoax

In 1913 a man by the name Charles Dawson who was an amateur archeologist, thought he had found the “missing link” between man and ape when he had found a human like skull in Pleistocene gravel beds near Piltdown village in Sussex, England. Dawson then started working with a man named Smith Woodward and they started making many discoveries together. In the same area they found pieces of a skull, jawbone, teeth, and primitive tools to which they said belonged to the same individual. When they placed everything together they had come to the conclusion that this was from a human ancestor from over 500,000 years prior. They had announced this discovery in 1912 at the Geological Society meeting, and their story was believed by the people. In 1949 things began to look a little different, new technology allowed them to see that the remains were actually only from 50,000 years prior which eliminated the possibility that it was the missing link between human and ape because at this point in ti...